Could be you have a bad belt or belt is loose.. Also it might be possible that the bushings are worn out of the alternator
Normally this is the bearings going bad.
Possibly and it can be the drive belt making a noise. It you hear a whine it is likely the alternator bearings are shot. You can remove the alternator and have it tested at most auto parts stores, after you make sure the belt is good.
Bearing in: Alternator? Water pump? A/C Compressor? Belt tensioner?
If your 88 CRX SI alternator belt is making a strange intermittent noise shortly after changing the alternator what's wrong, the belt tension could be off. Adjust the belt slightly.
im not sure but in my 2000 Plymouth neon my alternator has been making squeeking noises in the morning when its cold and just recently its been making a clicking noise as the engine is ruvving down or sometime ruvving up, not sure if that has to do with the alternator
sounds like the alternator is going bad.
I have a `00 blazer and recently my car started making a loud winding noise also. Come to find out I had to have a whole new transmission due to that noise! The repair shop said that the noise is the first sign of the transmission going out!
How do you replace an alternator on 2008 dodge Avenger? My car is making a whining noise and this may be the problem.
If bearings go bad on a alternator/ will make a grindind noise or long squilling noise.. but if only electronic's inside alternator are damage no noise wil be heard
In my case the bearing went bad and "froze" making a loud noise and making the fan belt smoke. If it does not make a noise, check the voltmeter on your dash - failure to charge could indicate the alternator is not working, but I think others things are more likely . It should be easy for a mechanic to test to see if the alternator is charging.
replace alternator belt
It sounds like the alternator belt is slipping with the high electrical load. Tighten or replace the alternator belt.